Multidirectional cutting tool

A method of cutting a workpiece with a cutter with substantially equal cutting capacity in any cutting direction, said method comprising the steps of:

• 1) locating and aligning a cutter adjacent said workpiece, said cutter having a generally cylindrical side wall with a plurality of cutting teeth spaced circumferentially around the lower end thereof including inside cutting edges, a plurality of flutes extending from said lower end around the outer periphery of said side wall and means for mounting said cutter to a power means;
• 2) simultaneously rotating and axially moving said cutter at a first predetermined angle into said workpiece cutting a circular groove from said workpiece and forming a stem of material extending from said workpiece into the bore of said cutter;
• 3) simultaneously rotating and axially moving said cutter into said workpiece cutting into said stem at a second predetermined angle of said cutter not parallel to said first predetermined angle;
• 4) continuing to cut into said workpiece to a depth greater than the axial length of said inside cutting edge;
• whereby said method permits multidirectional cutting of said workpiece enabling holes to be drilled, laterally extending cuts to be made;
• and angled plunge cuts to be made.

A method of cutting a workpiece, comprising the steps of:

• 1) locating and aligning a cutter tool adjacent said workpiece, said cutter having a generally cylindrical side wall with a plurality of cutting teeth spaced circumferentially around the lower end thereof, said cutting teeth having radially extending cutting edges, inside diameter cutting edges and outside diameter cutting edges, a plurality of flutes extending from said lower end around the outer periphery of said side wall and means for mounting said cutting tool to a power means;
• 2) cutting a circular groove with a central stem portion remaining on said workpiece and projecting into said cutter tool adjacent said inside diameter cutting edges as said cutting tool is moved in an axial direction coincident to the longitudinal axis of said cutter, said stem having a height between very slight to substantially greater than the length of said inside diameter cutting edges;
• 3) cutting into said workpiece with said outside diameter cutting edges as said cutter is moved in a direction non-parallel to the longitudinal axis of said cutter with said inside diameter cutting edges cutting into said stem;
• 4) continuing to cut into said workpiece until said cut is completed.

A cutting tool for multidirectional cutting of a workpiece with substantially equal cutting capacity in all cutting directions;

• said cutting tool comprising:
• a tubular body portion having a generally cylindrical wall with an outer and inner periphery provided with a plurality of cutting teeth spaced circumferentially around the lower end thereof and a plurality of flutes extending upwardly in said outer periphery of said generally cylindrical wall from said lower end;
• said cutting teeth having at least two generally radially extending cutting edges thereon staggered circumferentially and axially, the first of said radially extending cutting edges extending outwardly from said inner periphery of said cylindrical wall and the second of said radially extending cutting edges extending inwardly from said outer periphery of said cylindrical wall;
• an interior cutting edge extending generally axially from said lower end upwardly from the intersection of said radially extending cutting edge and said inner periphery of said cylindrical wall, said interior cutting edge diverging from the longitudinal axis of said cutting tool;
• an exterior cutting edge formed about said outer periphery of said cylindrical wall;
• whereby said radially extending cutting edges of said plurality of teeth cut a circular groove into said workpiece with a stem of material remaining within said cutter body as the cutter is rotated and moved along an axis coincident to the rotational axis of said cutter into said workpiece with said interior cutting edge of said cutting teeth cutting into and removing said stem of material from said workpiece and said exterior cutting teeth removing material from said workpiece as said cutter is moved along an axis non-parallel to the rotational axis of said cutter;
• thereby enabling said cutting tool to drill axially into said workpiece, cut laterally through said workpiece and ramp into said workpiece at an angle.

A multidirectional cutting tool for cutting a workpiece in at least two axes, said cutting tool comprising:

• a generally cylindrical body portion having a first end adapted to be received in a power tool for rotating said cutting tool and a cutter end;
• said cutter end having in inside diameter, an outside diameter and a plurality of spaced cutting teeth projecting generally axially therefrom;
• said cutting teeth each having an inside surface spaced radially from the longitudinal axis of said cylindrical body portion and an outside surface;
• said cutting teeth inside surfaces generating a diameter of rotation less than said inside diameter of said cutting end and said cutting teeth outside surfaces generating a diameter of rotation generally equal to said cutting end outside diameter;
• said cutting teeth inside surfaces including at least two rotationally spaced inside cutting edges, said cutting teeth outside surfaces including at least two rotationally spaced outside cutting edges and said cutting teeth including at least two rotationally spaced generally radially extending cutting edges;
• whereby said generally radially extending cutting edges cut a circular groove in said workpiece leaving a stem extending into said cutter end as said cutting tool is rotated and moved axially into said workpiece and said workpiece stem is removed by said inside cutting edges as said cutting tool is moved laterally.

A multidirectional tool for cutting a workpiece in at least two axes of said tool, said cutting tool comprising:

• a generally cylindrical body portion having a first tool-engaging end adapted to be received in a power tool for rotating said cutting tool and a cutter end;
• said cutter end having an inside diameter, an outside diameter and a plurality of spaced cutting teeth projecting generally axially from said cutter end;
• said plurality of cutting teeth having an inside surface spaced radially from the longitudinal axis of said cylindrical body portion and an outside surface;
• said plurality of cutting teeth further having at least two circumferentially spaced inside cutting edges at the leading edge of said inside surface, at least two generally radially extending cutting edges and at least two outside cutting edges at the leading edge of said outside surface, said inside cutting edges having an axial length greater than the minimum diameter of said cutter measured between said inner cutting edges;
• whereby said generally radially extending cutting edges cut a circular groove in said workpiece leaving a stem extending into said cutter end as said cutting tool is rotated and moved axially into said workpiece and said workpiece stem is at least partially removed by said inside cutting edges as said cutting tool is moved laterally.

A method of cutting a workpiece, comprising the steps of:

• 1) locating and aligning a cutter tool adjacent said workpiece, said cutter having a generally cylindrical side wall with a plurality of cutting teeth spaced circumferentially around the lower end thereof, said cutting teeth having circumferentially spaced radially extending cutting edges with inside surfaces radially spaced from the axis of rotation of the cutter defining an inner periphery, and outside diameter cutting edges, a plurality of flutes extending from said lower end around the outer periphery of said side wall and means for mounting said cutting tool to a power means;
• 2) cutting with said radial cutting edges a circular groove with a central stem portion having a diameter less than the axial length of said inside cutting edges remaining on said workpiece and projecting into said inner periphery defined by said radially extending cutting edges as said cutting tool is moved in an axial direction coincident to the axis of rotation of said cutter;
• 3) cutting into said workpiece with said outside diameter cutting edges as said cutter is moved in a direction non-parallel to the longitudinal axis of said cutter with said inside surfaces removing said stem;
• 4) continuing to cut into said workpiece until said cut is completed.

An annular cutting tool having a first end adapted to be mounted into a spindle for rotating said tool and a second end;

• said second end having an inside diameter, an outside diameter and a plurality of cutting teeth projecting generally axially therefrom;
• said second end further having chip passages formed into the outside diameter which communicate with the said cutting teeth for the purpose of receiving materials cut by the cutting teeth;
• said cutting teeth having an inside surface spaced radially from the rotational axis of the tool, a generally radially extending cutting edge and an outside diameter cutting edge;
• at least one of said cutting teeth having an inside diameter cutting edge formed onto said inside surface;
• said inside cutting edge having an axial length which exceeds the least diameter of rotation of the said at least one inside cutting edge;
• and a chip passage formed adjacent said inside cutting edge which leads to one of the chip passages formed into the outside diameter of the tool.

A multidirectional tool for cutting a workpiece in at least two axes of said tool, said cutting tool comprising:

• a generally cylindrical body portion having a first tool-engaging end adapted to be received in a power tool for rotating said cutting tool and a cutter end;
• said cutter end having an inside diameter, an outside diameter and a plurality of spaced cutting teeth projecting generally axially from said cutter end;
• said plurality of cutting teeth each having an inside surface spaced radially from the longitudinal axis of said cylindrical body portion and an outside surface;
• said plurality of cutting teeth further having at least two circumferentially spaced inside cutting edges at the leading edge of said inside surface, at least two generally radially extending cutting edges and at least two outside cutting edges at the leading edge of said outside surface;
• whereby said generally radially extending cutting edges cut a circular groove in said workpiece leaving a stem extending into said cutter end as said cutting tool is rotated and moved axially into said workpiece and said workpiece stem is at least partially removed by said inside cutting edges as said cutting tool is moved laterally.